CN114030394B - Subway contact net full-parameter trackless measurement construction method - Google Patents

Subway contact net full-parameter trackless measurement construction method Download PDF

Info

Publication number
CN114030394B
CN114030394B CN202111432009.6A CN202111432009A CN114030394B CN 114030394 B CN114030394 B CN 114030394B CN 202111432009 A CN202111432009 A CN 202111432009A CN 114030394 B CN114030394 B CN 114030394B
Authority
CN
China
Prior art keywords
suspension
point
measurement
total station
lofting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202111432009.6A
Other languages
Chinese (zh)
Other versions
CN114030394A (en
Inventor
文阳
黄泽宽
吴飞
李承连
程长智
蒋海
李彬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Railway 11th Bureau Group Co Ltd
China Railway 11th Bureau Group Electric Engineering Co Ltd
Original Assignee
China Railway 11th Bureau Group Co Ltd
China Railway 11th Bureau Group Electric Engineering Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Railway 11th Bureau Group Co Ltd, China Railway 11th Bureau Group Electric Engineering Co Ltd filed Critical China Railway 11th Bureau Group Co Ltd
Priority to CN202111432009.6A priority Critical patent/CN114030394B/en
Publication of CN114030394A publication Critical patent/CN114030394A/en
Application granted granted Critical
Publication of CN114030394B publication Critical patent/CN114030394B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60MPOWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
    • B60M1/00Power supply lines for contact with collector on vehicle
    • B60M1/12Trolley lines; Accessories therefor
    • B60M1/20Arrangements for supporting or suspending trolley wires, e.g. from buildings

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machines For Laying And Maintaining Railways (AREA)

Abstract

The invention discloses a subway contact net full-parameter trackless measurement construction method, which relates to the technical field of subway construction and comprises the following steps: s1, obtaining coordinates of a suspension point through the mileage of the suspension point and the distance of the suspension point deviating from the center of a pantograph; s2, measuring lofting and rechecking: guiding the coordinates of the suspension points into a total station, utilizing a CPIII control pile to carry out station setting of the total station, lofting and marking the suspension points point by point, recording corresponding suspension point elevation h after lofting, and obtaining a measurement angle alpha; and S3, carrying out full-parameter calculation by adopting the height h of the suspension point and the measurement angle alpha to obtain the length of the suspension post, the installation correction angle of the suspension post, the production angle of the suspension post and the installation height of the cantilever on the suspension post. The invention meets the high-precision requirement of high-speed subways, and can be widely applied to trackless measurement construction of subway contact networks.

Description

Subway contact net full-parameter trackless measurement construction method
Technical Field
The invention relates to the technical field of subway construction, in particular to a subway overhead contact system full-parameter trackless measurement construction method.
Background
With the continuous development of economic society and cities in China, the requirements of citizens on the comfort level and the rapidness of the subway are increasingly improved, and the high-speed subway (urban area express line) is bred, so that higher requirements on the measurement and installation accuracy of the contact network are provided. The hot-sliding opening of the contact network is a milestone event of the subway construction entering the comprehensive joint debugging. However, the construction of the contact net is almost zero construction period due to the influence of construction speed increase, early-stage sign and separation, civil engineering and track construction lag. Therefore, the trackless measurement and calculation of the suspension point of the contact net is the most critical ring, and the customization of materials, the installation quality, the effective construction period and the like of the contact net are directly influenced. The general subway rigid contact net mainly comprises a chemical anchor bolt, a suspension channel steel, a bus bar, a contact line, an overhead ground wire and the like. The high-speed subway is different from a common subway rigid contact net in composition, mainly comprises a sliding groove, a T-shaped bolt, a hanging column, a spiral arm and the like, and belongs to a novel subway suspension positioning device.
A traditional total station for trackless measurement lofts a line center line on the tunnel ground to form a mark of the line center on the tunnel ground, marks the position of a suspension point in an interval by a tape measure pulling method, and projects a plumb of a line center mark point at the suspension point on the top surface of the tunnel by a line throwing instrument and marks the plumb. However, the method has the defects of large curve section error, low straight section precision, incapability of determining the length of an anchor bolt and the like, and particularly cannot realize the measurement and calculation work of the length of a suspension post, the angle of a top plate, the installation and correction angle of the suspension post and the installation height of a cantilever on the suspension post on the high-speed subway measurement, and cannot meet the basic requirements of high-speed subway trackless measurement construction.
The traditional construction process comprises the following steps:
coordinate calculation → tunnel ground line center measurement lofting → tunnel ground positioning point projection to tunnel top → tunnel top positioning point offset measurement → trackless construction.
The traditional trackless measurement construction method comprises the steps of calculating the mileage of each positioning point according to a contact network plane layout, calculating the coordinates of the line center of each positioning point according to line information provided by a design institute, lofting and marking the coordinates of the line center by using a total station, vertically projecting the line center mark on the tunnel ground to the top surface of the tunnel, and for a straight-line segment, vertically projecting the line center mark on the tunnel top surface of the tunnel ground to be the projection of a pantograph center on the tunnel top surface. For the curve segment, an offset exists between the projection of the center of the pantograph on the top surface of the tunnel and the vertical projection of the line center mark on the top surface of the tunnel, and the error of the curve segment is large. And (3) during the construction of the contact network, punching according to the marked positioning points, and installing a chemical anchor bolt and a suspension device. The trackless measuring process is complex, and the measuring time is long. The accumulated error exists in the multiple measurement, and the construction quality can not be ensured.
The main disadvantages of the prior art include:
(1) when the trackless measurement mark hangs the locating point, the measurement is carried out for a plurality of times, the time consumption is long, the measurement and the location cannot be carried out for one time, and the measurement errors are accumulated in the measurement for a plurality of times.
(2) When the curve section is measured, the line central line is not coincident with the pantograph central line, the error is large, the precision is insufficient, and the later reworking risk is large.
(3) The conventional trackless measurement technology can only complete the measurement of the position of a general subway suspension positioning point, cannot measure the length of an anchor bolt, has low trackless measurement value, cannot realize the measurement and calculation work of the length of a suspension post, the angle of a top plate, the installation correction angle of the suspension post and the installation height of a cantilever on the suspension post particularly on the trackless measurement of high-speed subways, and cannot meet the basic requirements of trackless measurement and construction of the high-speed subways.
Disclosure of Invention
The invention aims to provide a full-parameter trackless measurement construction method for a subway contact network, which aims to solve the problems in the prior art, obtain the length of a suspension post, the angle of a top plate, the installation and correction angle of the suspension post and the installation height of a cantilever on the suspension post, and realize full-parameter trackless measurement and accurate assembly construction.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a subway contact net full-parameter trackless measurement construction method, which comprises the following steps of:
s1, obtaining coordinates of a suspension point through the mileage of the suspension point and the distance of the suspension point deviating from the center of a pantograph;
s2, measuring, lofting and rechecking: guiding the coordinates of the suspension points into a total station, utilizing a CPIII control pile to carry out station setting of the total station, lofting and marking the suspension points point by point, recording corresponding suspension point elevation h after lofting, and obtaining a measurement angle alpha;
and S3, performing full-parameter calculation by adopting the height h of the suspension point and the measurement angle alpha to obtain the length of the suspension post, the installation correction angle of the suspension post, the production angle of the suspension post and the installation height of the cantilever on the suspension post.
Preferably, said S2 comprises the steps of:
s21, importing the CPIII of the section to be measured and the coordinates of the suspension point into a total station;
s22, setting stations strictly according to the setting requirements of the total station CPIII;
s23, adjusting a lofting mode of the total station, calling out a suspension point, beginning lofting the suspension point, marking the suspension point according to a laser indication point of the total station, recording the marking point, writing a suspension point number and a pull-out value according to a measurement requirement of a contact network, and recording the height h of the suspension point measured by the total station at the moment;
and S24, rotating the total station downwards, adjusting the indicating laser of the total station to the shield wall right below the mark point, adjusting the measurement parameters to enable the coordinate of the measurement point to be consistent with the coordinate of the suspension point, aligning the center of the electronic level gauge to the laser indicating point, measuring the angle, and recording the measurement angle alpha.
Preferably, in S23, the lofting mode of the total station is adjusted to be a tracking measurement, prism-free mode.
Preferably, in S23, the total station is a total station with a servo motor.
Preferably, in S23, the lofting of the suspension point can in principle only be performed in two pairs of CPIII control piles used in the total station setting, and the lofting must not be exceeded.
Preferably, in S23, before setting a new station and lofting, retesting a nearest suspension point of the lofting of the previous station, and performing cross check between two stations to ensure accuracy of measurement.
Preferably, in S3, the length H of the suspension post is:
H=(h-h 0 )÷cos[arcsin(h super-super ÷1435)]±P×h Super-super ÷1435-h Rail
Wherein h is the elevation of a suspension point measured by a total station in meters; h is a total of 0 The height of the rail surface at the suspension point is measured in meters; h is Super-super The outer rail at the suspension point is ultrahigh in unit millimeter; 1435 is standard gauge, unit millimeter; p is the distance between the suspension post and the center of the line and is unit meter; h is Rail The distance from the bottom of the suspension post to the rail surface is unit meter.
Preferably, in S3, the mounting adjustment angle θ of the suspension post is:
θ=arcsin(h super-super ÷1435)÷π×180°
Wherein h is Supermally The outer rail at the suspension point is ultrahigh in unit millimeter; 1435 is standard gauge in millimeters.
Preferably, in S3, the suspension post production angle β is:
β=(90°-α)±θ
wherein alpha is a measurement angle at a suspension point and a unit degree; theta is the installation integral angle of the suspension post and the unit degree.
Preferably, in S3, the installation height h of the cantilever on the suspension post An Comprises the following steps:
h an ={(h-h 0 )÷cos[arcsin(h Supermally ÷1435)]±P×h Super-super ÷1435}×1000-h Is connected with -h 1
H is the elevation of a suspension point measured by a total station in meters; h is a total of 0 The height of the rail surface at the suspension point is measured in meters; h is Supermally The outer rail at the suspension point is ultrahigh in unit millimeter; 1435 is standard gauge, unit mm; p is the distance between the suspension post and the center of the line and is unit meter; h is Is connected with The height of a contact net is measured in millimeters; h is a total of 1 The thickness of the sliding groove, the thickness of the top plate of the hanging column and the distance between the contact line and the hoop on the installation base are the sum of unit millimeter.
Compared with the prior art, the invention achieves the following technical effects:
according to the invention, coordinates of suspension points are theoretically calculated, and a total station is adopted for direct lofting and positioning, so that trackless measurement construction requirements of contact networks with different tunnel sections and different speed grades can be met; compared with the traditional trackless measurement construction, the method adopts geodetic coordinates for direct positioning, can perform high-precision positioning measurement on straight lines and curves, and can determine and calculate the length of the suspension post, the angle of the top plate, the installation and correction angle of the suspension post and the installation height of the cantilever on the suspension post, thereby realizing the trackless measurement of full parameters and the precise assembly construction. The total-parameter trackless measurement of the high-speed subway contact network uses a total station and an angle ruler as main measurement equipment, and uses high-precision CPIII as a control pile to carry out measurement construction, so that the high-precision requirement of the high-speed subway is met, and the method can be widely applied to trackless measurement construction of the subway contact network.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a catenary suspension installation;
wherein: 1-T bolt; 2-hanging columns; 3-rotating the base; 4-a twisting seat; 5-rigid suspension post insulators; 6-screw rod; 7-a screw cap; 8-lock washer; 9-positioning the wire clamp connecting plate; 10-positioning a wire clamp; 11-a davit roof; 12-a chute; 13-anchor ear; 14-contact line; 15-pantograph.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
The invention aims to provide a construction method for full-parameter trackless measurement of a subway contact network, which aims to solve the problems in the prior art, obtain the length of a suspension post, the angle of a top plate, the installation and correction angle of the suspension post and the installation height of a cantilever on the suspension post, and realize full-parameter trackless measurement and accurate assembly construction.
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description thereof.
The embodiment provides a subway contact network full-parameter trackless measurement construction method, which comprises the following steps of:
s1, obtaining coordinates (X and Y) of a suspension point according to the mileage of the suspension point and the distance of the suspension point deviating from the center of a pantograph 15; before calculation, a professional and formal line and slope adjusting (comprehensive track laying) diagram or related data of the track is required to be provided. Meanwhile, when the mileage and the limit of a suspension point of the contact network are counted, careful proofreading is needed, and the correctness of the mileage after the length of the line is short is particularly noticed;
the distance of the suspension point deviating from the center of the pantograph 15 refers to the distance between the center of a suspension point suspension column top plate 11 and the center line of the pantograph 15;
specifically, the coordinate calculation starting point range L is known 0 Starting point coordinate (X) 0 ,Y 0 ) The azimuth gamma of the starting point and the mileage L of the point to be calculated are calculated in three conditions.
Straight line segment: by linear function X = X 0 +(L-L 0 )*cosγ;Y=Y 0 +(L-L 0 )*sinγ;
Circle curve segment: x = X 0 +cos[γ±(180°/π×L/R 1 )/2]×C 1 ;Y=Y 0 +sin[γ±(180°/π×L/R 1 )/2]×C 1 (ii) a Wherein, C 1 Is the chord length of the circular curve section, R 1 Is the radius of a circular curve segment;
a relaxation curve segment: x = X 0 +cos(γ±δ/3)×C 2 ;Y=Y 0 +sin(γ±δ/3)×C 2
δ=(L-L 0 ) 2 /2R 2 L S ×180°/π;C 2 =(L-L 0 )-(L-L 0 ) 5 /90R 2 2 L S 2
Wherein L is S Represents the total length of the relaxation curve, C 2 Is a gentle curveChord length of the segment, R 2 A radius of a circle of a gentle curve section;
s2, measuring lofting and rechecking: and (3) guiding the coordinates of the suspension points into a total station, setting the total station by using the CPIII control pile, lofting and marking the suspension points point by point, wherein the X and Y coordinates are only available, so that the upper point and the lower point of the tunnel wall are bound to exist during the measurement of the shield tunnel. And the upper side point is a suspension point, the corresponding suspension point elevation h is recorded after lofting, the instrument is rotated downwards to find a lower measurement point, and the angle value alpha of the position is measured by using an angle ruler according to the position of the laser indication point. Because the included angles between the tangent lines of the upper and lower symmetrical points and the horizontal direction of the circular shield tunnel are equal and are also alpha, the measurement angle alpha is obtained;
the CPIII is a measurement control pile for track construction, is a measurement control point extended by a civil engineering Control Pile (CPII), is more accurate than the civil engineering control pile after the CPIII control pile is subjected to operations such as checking, adjustment and the like, is composed of (X, Y and Z) coordinates, and is set as a general operation before the measurement of a total station.
Specifically, S2 includes the steps of:
s21, importing the CPIII of the section to be detected and coordinates of a suspension point into a total station;
s22, setting stations according to the station setting requirements of the total station CPIII strictly;
s23, adjusting a total station lofting mode to be a tracking measurement and prism-free mode, calling out a suspension point, beginning lofting the suspension point, automatically searching for the approximate position of the suspension point by adopting a total station with a servo motor, marking the suspension point according to a total station laser indication point by a marking person after manual fine adjustment, marking the suspension point as a marking point, writing a suspension point number and a pull-out value according to a contact network measurement requirement, and recording the height h of the suspension point measured by the total station by the recording person;
and S24, manually rotating the total station (horizontally and non-rotatably), adjusting the indicating laser of the total station to the shield wall right below the mark point, finely adjusting the measurement parameters to enable the coordinate of the measurement point to be consistent with the coordinate of the suspension point, aligning the center of the 200-type electronic level ruler to the laser indicating point by a marker, measuring the angle, and recording the measurement angle alpha by a recorder.
In this embodiment, in S23, lofting of a suspension point can only be performed in two pairs of CPIII control piles used in a total station setting station in principle, and lofting beyond a range cannot be performed; before setting a new station and lofting, retesting a nearest suspension point of lofting of the previous station, and performing cross check between two stations to ensure the accuracy of measurement; recording personnel need to measure a guardian and observe and supervise the correct operation and lofting work of marking personnel;
s3, performing full-parameter calculation by adopting the height h of the suspension point and the measurement angle alpha to obtain the length of the suspension post 2, the installation and correction angle of the suspension post 2, the production angle of the suspension post 2 and the installation height of the cantilever on the suspension post 2; and data support is provided for ordering the hanging columns 2, field installation and correction and cantilever installation. After the calculation, the technical personnel checks each parameter.
Specifically, the length H of the suspension post 2 is:
H=(h-h 0 )÷cos[arcsin(h supermally ÷1435)]±P×h Supermally ÷1435-h Rail
H is the elevation of a suspension point measured by a total station in meters; h is 0 The height of the rail surface at the suspension point is measured in meters; h is Supermally The outer rail at the suspension point is ultrahigh in unit millimeter; 1435 is standard gauge, unit mm; p is the distance between the suspension post 2 and the center of the line, and is unit meter; h is Rail The distance from the bottom of the hanging column 2 to the rail surface is unit meter;
the installation and correction angle theta of the suspension post 2 is as follows:
θ = arcsin (h super ÷ 1435) ÷ π × 180 °
Wherein h is Supermally The outer rail at the suspension point is ultrahigh in unit millimeter; 1435 is standard gauge in millimeters.
The production angle beta of the suspension post 2 is as follows:
β=(90°-α)±θ
wherein alpha is a measurement angle at a suspension point and a unit degree; theta is the installation integral angle of the suspension post 2, namely the included angle between the post body and the top plate and unit degree;
the installation height h of the cantilever on the suspension post 2 An Comprises the following steps:
h an ={(h-h 0 )÷cos[arcsin(h Super-super ÷1435)]±P×h Super-super ÷1435}×1000-h Is connected with -692
Wherein h is the elevation of a suspension point measured by a total station in meters; h is a total of 0 The height of the rail surface at the suspension point is unit meter; h is Supermally The outer rail at the suspension point is ultrahigh in unit millimeter; 1435 is standard gauge, unit mm; p is the distance between the suspension post 2 and the center of the line, and is unit meter; h is a total of Is connected with The contact net guide height is unit millimeter, and in the embodiment, the contact net guide height is 5300 millimeters; h is a total of 1 The thickness of the sliding groove 12, the thickness of the top plate 11 of the suspension post and the distance between the contact line 14 and the hoop 12 on the installation base are the sum of unit millimeter, in this embodiment h 1 692 mm.
The embodiment further comprises S4, and the goods and materials ordering and construction specifically comprises the following steps:
s41, checking the serial numbers before installing the hanging columns 2 to ensure that the serial numbers correspond to the hanging points one by one;
s42, due to errors of measurement, calculation, manufacturing and the like, after the suspension post 2 is installed, a gasket is needed to be used for straightening, so that accumulated errors of a front-end process are eliminated, and the installation quality and precision are improved;
s43, the electronic level ruler adopted for straightening needs to be simply corrected every day, and the straightening construction of the suspension post 2 is carried out strictly according to the straightening angle of the suspension post 2 in the construction table;
s44, determining the installation height of the cantilever according to a construction table, wherein the installation height is influenced by the weight of the busbar and the cantilever, the whole cantilever generates deflection, and in order to improve the installation precision and facilitate later-stage adjustment, the installation experience of technical exploration is as follows: the cantilever was mounted 20mm upwards.
The implementation flow of this embodiment is as follows: coordinate calculation → measurement lofting and rechecking → full parameter calculation → ordering and construction of goods and materials.
In the embodiment, corresponding coordinates are calculated according to the mileage (pull-out value) of a suspension point in a contact network plane layout chart, lofting is carried out through a total station, the elevation of the corresponding point is recorded, the elevation of a corresponding rail surface is subtracted, the clear height of the suspension point is calculated according to the height of the rail surface, the length of an anchor bolt (a suspension column 2) is obtained, and the production angle of the suspension point and the suspension column 2 is measured by using an angle ruler.
In the embodiment, the total station and the angle ruler are used as main measuring equipment, the high-precision CPIII is used as a control pile, the method is adopted for measurement construction, the high-precision requirement of high-speed subways is met, and the method can be widely applied to trackless measurement construction of subway overhead contact networks.
According to the embodiment, coordinates of a suspension point are theoretically calculated, and the total station is adopted for direct lofting and positioning, so that the trackless measurement construction requirements of contact networks with different tunnel sections and different speed grades can be met. According to the embodiment, geodetic coordinates are adopted for direct positioning, so that high-precision positioning measurement of straight lines and curves can be carried out, meanwhile, the length of the suspension post 2, the angle of a top plate, the installation and correction angle of the suspension post 2 and the installation height of a cantilever on the suspension post 2 can be measured and calculated, and full-parameter trackless measurement and accurate assembly construction are realized. The subway contact net full-parameter trackless measurement construction method greatly reduces the risk of the construction period. By applying the embodiment, the blank of domestic trackless full-parameter measurement is filled, and particularly the problem of inaccurate curve section measurement is fundamentally solved. And the CPIII is adopted as a measurement control network, so that the measurement precision is greatly improved. The embodiment is used for measuring and constructing the non-rail-mounted area, the construction safety coefficient is greatly improved, non-cross operation is realized, and the construction operation environment is optimized. Through the application of this embodiment, can "break away from" track construction restriction completely, realize balanced construction, can optimize material inventory, reasonable labour deploys, and the worker is not lost, is not robbed to the reasonable labour, has improved economic benefits. The position of the suspension point is positioned in the trackless measurement lofting mode, the workload of measuring personnel is reduced, and measurement accumulated errors are avoided. This embodiment is for davit 2 order, and the field installation is neat, the cantilever installation provides data support, reduces technical staff data processing work load, guarantees the data accuracy, guarantees the installation accuracy, reduces the later stage adjustment, improves the construction efficiency. The embodiment is full-parameter trackless measurement, can ensure the accuracy of each size of the order hanging column 2, does not perform secondary cutting processing on the spot and does not waste materials. The trackless construction demand of measuring of different tunnel sections, different speed grades contact net can be satisfied to this embodiment, can satisfy 2 mounting methods of high-speed subway contact net davit and hang, also can satisfy general subway contact net crab-bolt mounting methods and hang, when general subway contact net crab-bolt mounting methods hung, 2 replacement for davit in this embodiment are the crab-bolt.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above description of the embodiments is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the foregoing, the description is not to be taken in a limiting sense.

Claims (5)

1. A subway contact network full-parameter trackless measurement construction method is characterized by comprising the following steps: the method comprises the following steps:
s1, obtaining coordinates of a suspension point through the mileage of the suspension point and the distance of the suspension point deviating from the center of a pantograph;
s2, measuring lofting and rechecking: guiding the coordinates of the suspension points into a total station, utilizing a CPIII control pile to carry out station setting of the total station, lofting and marking the suspension points point by point, recording corresponding suspension point elevation h after lofting, and obtaining a measurement angle alpha;
the S2 comprises the following steps:
s21, importing the CPIII of the section to be measured and the coordinates of the suspension point into a total station;
s22, setting stations according to the station setting requirements of the total station CPIII strictly;
s23, adjusting a lofting mode of the total station, calling out a suspension point, beginning lofting the suspension point, marking the suspension point according to a laser indication point of the total station, recording the marking point, writing a suspension point number and a pull-out value according to a contact network measurement requirement, and recording the suspension point elevation h measured by the total station at the moment;
s24, downwards rotating the total station, adjusting the indication laser of the total station to a shield wall right below the marking point, adjusting measurement parameters to enable the coordinate of the measurement point to be consistent with the coordinate of the suspension point, aligning the center of the electronic level bar to the laser indication point, measuring an angle, and recording a measurement angle alpha;
s3, carrying out full-parameter calculation by adopting the height h of the suspension point and the measurement angle alpha to obtain the length of the suspension post, the installation correction angle of the suspension post, the production angle of the suspension post and the installation height of the cantilever on the suspension post;
in S3, the length H of the suspension post is as follows:
H=(h-h 0 )÷cos[arcsin(h super-super ÷1435)]±P×h Super-super ÷1435-h Rail
The installation integral angle theta of the suspension post is as follows:
θ=arcsin(h super-super ÷1435)÷π×180°
The production angle beta of the suspension post is as follows:
β=(90°-α)±θ
height h for mounting cantilever on suspension column An Comprises the following steps:
h an ={(h-h 0 )÷cos[arcsin(h Super-super ÷1435)]±P×h Super-super ÷1435}×1000-h Is connected with -h 1
Wherein h is the elevation of a suspension point measured by a total station in meters; h is 0 The height of the rail surface at the suspension point is unit meter; h is a total of Super-super The outer rail at the suspension point is ultrahigh in unit millimeter; 1435 is standard gauge, unit mm; p is the distance between the suspension post and the center of the line, and is unit meter; h is Is connected with The height of a contact net is measured in millimeters; h is 1 The sum of the thickness of the sliding groove, the thickness of a top plate of the hanging column and the distance between the contact line and an upper hoop of the mounting base is in unit of millimeter; h is Rail The distance from the bottom of the hanging column to the rail surface is unit meter; alpha is the measured angle in degrees at the suspension point.
2. The subway overhead line system full-parameter trackless measurement construction method according to claim 1, characterized in that: and in the step S23, adjusting the lofting mode of the total station to be a tracking measurement and prism-free mode.
3. The subway overhead line system full-parameter trackless measurement construction method according to claim 1, characterized in that: in S23, the total station is a total station with a servo motor.
4. The subway overhead line system full-parameter trackless measurement construction method according to claim 1, characterized in that: in the step S23, lofting of the suspension point can only be performed in two pairs of CPIII control piles used in the total station, and lofting within an over-range mode cannot be achieved.
5. The subway overhead line system full-parameter trackless measurement construction method according to claim 4, characterized in that: in the step S23, before setting a new station for lofting, retesting a nearest suspension point of the previous station for lofting, and performing cross check between two stations to ensure accuracy of measurement.
CN202111432009.6A 2021-11-29 2021-11-29 Subway contact net full-parameter trackless measurement construction method Active CN114030394B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111432009.6A CN114030394B (en) 2021-11-29 2021-11-29 Subway contact net full-parameter trackless measurement construction method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111432009.6A CN114030394B (en) 2021-11-29 2021-11-29 Subway contact net full-parameter trackless measurement construction method

Publications (2)

Publication Number Publication Date
CN114030394A CN114030394A (en) 2022-02-11
CN114030394B true CN114030394B (en) 2022-12-16

Family

ID=80139101

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111432009.6A Active CN114030394B (en) 2021-11-29 2021-11-29 Subway contact net full-parameter trackless measurement construction method

Country Status (1)

Country Link
CN (1) CN114030394B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114386207B (en) * 2022-03-25 2022-06-24 中铁电气化勘测设计研究院有限公司 Suspension point-based contact network three-dimensional model construction method
CN118362104B (en) * 2024-06-20 2024-08-23 中铁四局集团有限公司 Urban rail transit field section contact net foundation trackless measurement method, system and application

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB299540A (en) * 1927-08-06 1928-11-01 Fritz Berg Improvements relating to the suspension of the live wire of electric railways
GB821264A (en) * 1956-12-05 1959-10-07 British Insulated Callenders Improvements in or relating to overhead electrification systems for railways
DE3213913A1 (en) * 1982-04-15 1983-11-17 Vsesojuznyj naučno-issledovatel'skij institut železnodorožnogo transporta, Moskva Chain suspension of the aerial contact line network for electrified railways
CN2853543Y (en) * 2005-11-21 2007-01-03 绵阳市铁人电气设备有限责任公司 Instrument for measuring contact net static whole parameter
CN102145662A (en) * 2010-12-30 2011-08-10 中铁三局集团电务工程有限公司 Arched wrist arm of tunnel and measuring and determining method thereof
EP2942230A1 (en) * 2014-05-09 2015-11-11 DB Systemtechnik GmbH Method for measuring the uplift of electrical contact lines on rail lines
CN106585427A (en) * 2016-11-11 2017-04-26 中铁十二局集团有限公司 Trackless construction method for subway rigid catenary system
RU2660195C1 (en) * 2017-05-12 2018-07-05 Федеральное государственное бюджетное образовательное учреждение высшего образования "Уральский государственный университет путей сообщения" (УрГУПС) Railways catenary system supports inclination angle control method
CN108457143A (en) * 2018-03-27 2018-08-28 株洲时代电子技术有限公司 A kind of track circuit coordinate measuring system
CN208515413U (en) * 2018-06-15 2019-02-19 中铁四局集团电气化工程有限公司 Subway assembled rigid overhead contact line device
CN210426438U (en) * 2019-11-04 2020-04-28 四川信达轨道交通设备有限责任公司 Single-rail laser full-parameter intelligent measuring instrument
CN111719364A (en) * 2020-06-09 2020-09-29 中铁上海工程局集团有限公司 Double-block ballastless track measurement and rechecking detection ruler and measurement and rechecking detection method
CN112393684A (en) * 2020-11-24 2021-02-23 中铁十一局集团电务工程有限公司 Contact net parameter measuring equipment and measuring method
CN112528386A (en) * 2020-12-31 2021-03-19 中铁建电气化局集团第三工程有限公司 Trackless accurate measurement method for suspension point position of contact network in subway tunnel

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR691365A (en) * 1930-01-27 1930-10-21 Construction process for electric lines with constant mechanical tension
RU2566458C2 (en) * 2014-02-20 2015-10-27 Анна Сергеевна Муратова-Милехина Method of determination of short circuit place in catenary system of electrified transport
CN109373988B (en) * 2018-12-05 2023-08-01 中铁十二局集团有限公司 Instrument and method for measuring trackless construction of overhead contact system in tunnel
CN112697093B (en) * 2020-12-22 2022-09-06 中铁十二局集团电气化工程有限公司 Method for calculating length and angle of trackless measuring suspension post in shield tunnel

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB299540A (en) * 1927-08-06 1928-11-01 Fritz Berg Improvements relating to the suspension of the live wire of electric railways
GB821264A (en) * 1956-12-05 1959-10-07 British Insulated Callenders Improvements in or relating to overhead electrification systems for railways
DE3213913A1 (en) * 1982-04-15 1983-11-17 Vsesojuznyj naučno-issledovatel'skij institut železnodorožnogo transporta, Moskva Chain suspension of the aerial contact line network for electrified railways
CN2853543Y (en) * 2005-11-21 2007-01-03 绵阳市铁人电气设备有限责任公司 Instrument for measuring contact net static whole parameter
CN102145662A (en) * 2010-12-30 2011-08-10 中铁三局集团电务工程有限公司 Arched wrist arm of tunnel and measuring and determining method thereof
EP2942230A1 (en) * 2014-05-09 2015-11-11 DB Systemtechnik GmbH Method for measuring the uplift of electrical contact lines on rail lines
CN106585427A (en) * 2016-11-11 2017-04-26 中铁十二局集团有限公司 Trackless construction method for subway rigid catenary system
RU2660195C1 (en) * 2017-05-12 2018-07-05 Федеральное государственное бюджетное образовательное учреждение высшего образования "Уральский государственный университет путей сообщения" (УрГУПС) Railways catenary system supports inclination angle control method
CN108457143A (en) * 2018-03-27 2018-08-28 株洲时代电子技术有限公司 A kind of track circuit coordinate measuring system
CN208515413U (en) * 2018-06-15 2019-02-19 中铁四局集团电气化工程有限公司 Subway assembled rigid overhead contact line device
CN210426438U (en) * 2019-11-04 2020-04-28 四川信达轨道交通设备有限责任公司 Single-rail laser full-parameter intelligent measuring instrument
CN111719364A (en) * 2020-06-09 2020-09-29 中铁上海工程局集团有限公司 Double-block ballastless track measurement and rechecking detection ruler and measurement and rechecking detection method
CN112393684A (en) * 2020-11-24 2021-02-23 中铁十一局集团电务工程有限公司 Contact net parameter measuring equipment and measuring method
CN112528386A (en) * 2020-12-31 2021-03-19 中铁建电气化局集团第三工程有限公司 Trackless accurate measurement method for suspension point position of contact network in subway tunnel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
地铁刚性接触网施工关键技术分析;东兴;《电子技术》;20210620;第50卷(第06期);第154-155页 *

Also Published As

Publication number Publication date
CN114030394A (en) 2022-02-11

Similar Documents

Publication Publication Date Title
CN114030394B (en) Subway contact net full-parameter trackless measurement construction method
CN109515252B (en) Trackless measurement construction method for subway contact network
CN106585427B (en) A kind of subway rigid contact net trackless construction method
CN104260643B (en) A kind of wind-proof overall steel bracket installation method
CN206876125U (en) A kind of clearance survey device for subway engineering
CN110375711A (en) Ring network trackless measurement construction method in a kind of subway tunnel
CN103115605A (en) Subway shaft orientated measurement method based on connected triangle
CN111981992B (en) Steel coil diameter calculation method
CN208921129U (en) A kind of contact network in tunnel trackless construction survey instrument
CN102425085A (en) CPIII plane network retest method in high-speed railway operation maintenance stage
CN207727371U (en) Railroad track data acquisition measuring device
CN206740087U (en) Fame dimensions deformation and the measurement apparatus of sensor health status
CN103983256B (en) A kind of contact network in tunnel casts anchor construction survey method
CN112444230B (en) Rigid contact net tunnel suspension post bottom plate angle trackless measuring method
CN206876177U (en) The fast-positioning device of Metro Tunnel circuit measuring point point position
CN215767015U (en) Tunnel vault subsides and measures auxiliary device
CN109778617A (en) A kind of lateral platform trackless pipeline construction method of Subway Tunnel
CN113405525B (en) Device of subway shield interval communication system and support positioning method
CN106949886B (en) Rapid positioning device and positioning method for subway tunnel engineering line measuring point positions
CN109696131A (en) Urban track traffic hangs overhead contact line anchor point trackless and measures engineering method
CN109751983A (en) A method of emergency, which is surveyed, sets laser data and transmitting point height
CN212963345U (en) River section probing type accurate flow measuring device
CN206944932U (en) A kind of urban track traffic trackside equipment installation site measuring system
CN202786997U (en) Turnout reducing value testing tool
CN208139978U (en) A kind of Subway Station Platform door surveying setting-out device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant